Drive-chain.



PATENTED APR. 19, 1904 E. F. MORSE. DRIVE CHAIN.

APPLICATION FILED BEPI. 2a, 1901 4 SHEETS-SHEET 1.

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No. 757,762. PATBNTBD APR. 19, 1904.

E. F. MORSE.

DRIVE GHAIN.

APPLIOATION IIIIIED SEPT. 26, 1901.

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E. F. MORSE.

' DRIVE CHAIN.

APPLIOATIQK FILED SEPT. 36, 1901.

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PATENTED APR.19, 1904. B. 1'. MORSE.

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- line of bearing of the link UNITED STATES Patented April 19, 19Q4.

PATENT OFFICE.

EVERETT F. MORSE, OF TRUMANSBURG, NEW YORK, ASSIGNOR TO MORSE CHAIN COMPANY, OF TRUMANSBURG, NEW YORK.

DRIVE-CHAIN.

SPECIFICATION forming part of Letters Patent No. 757,762, datedm 19, 199i Application filed September 23, 1901'. Serial No. 76,616- (No model.)

To all whom it may concern:

Be it known that I. EVERETT F. Mouse, a citizen of the United States, and a resident of Trumansburg, in the county of Tompkins and State of New York, have invented certain new and useful Improvements in Drive-Chains, of which the following is a specification. r

This invention relates to an improvementin drive-chains for general power transmission, and particularly tochains of this class wherein the pintle consists of two parts bearing upon one another throughout their length along the upon the other in the joint.

One object of the invention is to increase the bearing-surface at the joint in chains wherein the links are made up of plates of which those in one link are interspersed upon the pintle with those of the adjacent links Another object is the construction of the chain in a manner such that alternate links only of the chain shall engage the sprocket, whereby the parts of the pintles having plain bearing-surfaces-the seat-pins-may be mounted facing each other in those links which do not touch the sprocket and which, bearing-surfaces are substantially at right angles to the length of the links, any slipping tendency of the rockersthe other members of the twopart pintleupon the seat-pins being thereby avoided.

Another object of the invention is the formation of the seat-pin with flattened or other wise irregular sides throughout, whereby it will hold a fixed position in each of the plates with which it engages, the holes in the links" sustainingthe seat-pin being made to substantially conform to said irregularities.

WVith these objects in view the invention consists in the construction and combination of parts, substantially as hereinafter set forth and claimed. v I In the accompanying drawings, which form a part of this specification, Figure 1 represents in side elevation a pair of sprocket-wheels and a section of chain, parts of the latter being broken away to disclose the mechanism of p the joints. Fig. 2 is a plan of three consecutive links in the chain seen in Fig. 1. Fig. 3 represents in side and end elevations the parts of a pintle in said chain. Fig. 4 represents in end View the parts forming a joint of my chain, wherein the pintle consists of a seat-pin and a rocker and wherein the radius of ourvature of the rocker is somewhat larger than that of the seatpin' and wherein the apertures through the links are made to conform to this relation of the two parts of the pintle. Fig.

5 is a similar view of forms of apertures in I the adjoining links when the seat-pin and rockerv have the-same radius ,of curvature. Figs. 6 and 7 show the forms of apertures in overlapping ends of plates forming the links represented as joined in Fig. 4. Figs. 8 and 9 give a similar representation with respect to Fig. 5. Fig. 10 represents one end of one of the outside plates of a link,'showingthe form of aperture for receiving the end of the seat-pin, which serves to connect together the plates constituting adjacent links. Fig. 11 represents a horizontal section th rough the joint shown in Fig. 5. Fig. 12 shows the aperture in the outside plate of the links supporting the rocker, wherein the radius of curvature of the rocker and scat-pin is the same. Fig. 13 is a similar view of the joint, wherein the radiusof curvature of the rocker is larger than that of the seat-pin. Fig. 14 is a'vertical section through the joint seen in Fig. 13, taken in the plane indicated by the line la 14, and shows the diiference in the size of the apertures in the outside plates of the link engaging the rocker and intermediate links. Fig. 15 represents in elevation a section of sprocket wheel and chain, wherein the engaging links of the chain are designed to have internal engagement on eitherendand external engagement on one end. Fig. 16 is a like view wherein the engaging links are designed to have external engagement on either end and internal engagement on one end. Fig. 17 is alike view wherein the engaging links are designed to have internal engagement oneither end. Fig. 18 is a like view wherein the engaging links have internal and external engagement on one end and no engagement on the other except to touch the sprocket-wheel between the faces of the teeth. Fig. 19 is a like view wherein the engaging links have either internal or external engagement on both ends. Fig. 20 is a transverse section of the joint, showing a modified form of pintle.

This invention has to deal especially with chains wherein the links are made up of a series of plates whereof the plates of each link are interspersed upon the pintle, preferably in regular alternation with those of the adjacent links, and wherein the pintle or pivot joining the links consist of two members, each rocking upon the other along the axis of oscillation between adjacent links.

In Fig. 1, A and B indicate a pair of sprocketwheels; 0, the plates constituting the links which engage the sprockets; D, the inside plates, and D the outside plates, constituting the links which do not engage the sprockets. The pintle consists of two parts, F, the seatpin, and G, the rocker. The seat-pins are fixed in the ends of the plates D, so that theirplain bearing-surfaces face one another and are substantially perpendicular to the length of the link. The seat-pins F are also provided with irregular generally flattened rear surfaces' throughout their length, as indicated at 20 21, Figs. 3 and 4, whereby the plates D will be held in fixed relation to the seat-pins, the apertures in said plates being made to conform to said surfaces of the seat-pin, as indicated in Figs. 4, 5, 7 and 9. are also preferably shouldered, as indicated in Figs. 3 and 14, and in assembling the'chain the reduced ends are slightly softened in order thatthey may be riveted upon the outside plates D, as clearly seen in Fig. 11. v p I The rocker G has the back surface, or that which engages the aperture of the links C, preferably cylindrical, though, if preferred, it, too, may be fixed in place in said plates by making its back surface irregular, as in'the' seat-pin.

In constructing a chain of the sort'just described ample clearance should be provided in the plates of one link for the movement of that part of the pintle which is securedinor has intimate engagement with the ends of the plates of the adjacent links. This clearance is fully illustrated in Figs. 4 to 14. It is also advisable to make the clearance portion of the pintle-aperture in the plates along the middle of the pintle a little larger than at the ends of the pintle, so as to provide against the possibility of the parts of the pintle binding in said apertures should either part of the pintle fail to be perfectly straight. This variation in size of apertures is seen in Figs. 11 and 14, wherein the apertures in the outermost plates C provide simply for the free movement of said plate about seat-pin F, while in the intermediate plates (land in the plates The seat-pins D ample clearance for all purposes is provided.

One of the chief advantages of a two-part pintle in a plate-chain resides in the fact that a continuous bearing is provided throughout 7 the width of the links, as clearly illustrated in Fig. 11. Were the pintle a solid one, the links D would have a bearing'in the joint for but one-half the length of the pintle and likewise with the links C, whereas with a twopart pintle each of said links has a bearing extending from one outside plate D to the other along the line H, FigssS and 11. Thus for each link the bearing-surface is doubled by the use of the-two-part pintle, and the wearing away at the pintle is thereby very materially decreased. This feature of my invention is equally applicable to a joint, as shown in Fig. 20, formed of pintles designed so that one part of the pintle G rubs on or 5 turns in the other part F as the joint bends. This formation of chain wherein alternate links only engage'th'e sprockets enables the wheel the teeth are engaged solely by the internal bearing-surfaces 2 of links 0, as is clearly seen by conceiving the direction of movement of'the wheel A to be reversed.

In Fig. 16 the same is true with. respect to the driving sprocket-wheel, but on the driven sprocket the link C engages the sprocket-teeth solely by the external bearing-surfaces n.

In Fig. 17 the engagement with the teeth of [o 5 the driving sprocket-wheel is by theinternal bearing-surfaces y of links C, and on the driven sprocket the engagement would be by the internal bearing-surfaces 2, whilefin Fig.

1 the'same is true with respect to the external 1 To bearing-surfaces m and a, respectively, of the 'links C.

In Fig. 18 the engagement on the driven sprocket is by the internal bearing-surfaces .e

and on the driving-sprocket by the external I15 bearing-surfaces as, the opposite ends of links C not touching the sprocket-teeth at all, but simply resting by a projection W upon the sprocket-wheel between the teeth.

In Fig. 19 the engagement with the teeth of 12 the driven sprocket-wheel is by the internal and external bearing-surfaces z and 7%, respectively, of the links C, while the engagement with the teeth of the driving sprocket-wheel is by the external and internal bearing-sur- 5 faces w and g, respectively, of the links C.

I claim as/my invention 1. A drive-chain having its links composed of a plurality of plates, the plates of each link being interspersed upon the pintles with the 3 IOO made to hold in place one part of each pintle and to allow free movement or. clearance of the other part thereof.

3. A drive-chain having each link composed of a plurality of plates, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and pintles formed in separate parts adapted to turn one upon the other, the apertures in said plates through which both parts of the pintles pass being made to hold in place one part of each pintle and to allow free movement or clearance of the other part thereof and which apertures in of oscillation of the links and adapted to rock one upon the other.

5. A drive-chain having each link composed of a plurality of plates, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and alternate links being free fromengagement with the sprockets, and two-part pintles of which the seatpins are mounted facing each other in the links which do not engage the sprockets and have plane bearing-surfaces which are substantially at right angles to the length of said links.

6. Adrive-chain having each link composed of a plurality of plates, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and two-part pintles of which the seat-pins have'fiattened sides throughout their length whereby they hold a fixed position in each of the plates with which they engage.

7. A drive-chain having each link composed of a plurality of plates, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and two-part pintles of which the seat-pins have irregular rear surfaces whereby they hold a fixed posit-ion in each of the plates with which they engage.

8. A drive-chain having links adapted to arch over the sprockets,the alternate links being free from engagement with the sprockets, and the remaining links constructed to have external engagement by one end in running over one sprocket and external engagement by the other end in running over the other sprocket.

9. A drive-chain having adjacent links composed of a plurality of plates adapted to arch over the sprocket-teeth, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and pintles formed in two'parts, of which one part engages with the plates of one link only and passes freely through openings in the plates of the adjacent link, and the other part engages with the plates of said adjacent link and passes freely through ppglainings in the plates of the first-mentioned 10. A drive-chain having adjacent links composed of a plurality of plates adapted to arch over the sprocket-teeth, the plates of each link being interspersed upon the pintles with the plates of the adjacent links, and pintles formed in separate parts which bear upon each other throughout substantially the full width of the chain, one part of the pintle engaging with the plates of one link only and passing freely through openings in adjacent link.

11. A drive-chain having each link composed of a plurality of plates interspersed upon the pintles with the plates of the adjacent links, and pintles formed in separate parts extending substantially the full width of the chain, and adapted to turn one upon another, the

apertures in said plates being made to rigidly hold one part of each pintle and to allow free movement of the other part thereof.

Signed at Trumansburg, in the county of Tompkins and State of New York, this 21st day of September, A. D. 1901.

EVERETT F. MORSE.

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